Cummutator.



No. 823,568. l PATENTED JUNE 19, 1966. W. L. WATERS.

GOMMUTATOR.

APPLIOATION FILED DEO. 5. 1904.

nl William L Warers M/w :El @MW NITED STATES WILLIAM L. VATERS, OEMILWAUKEE, WISCONSIN.

COMMUTATOR.

Specification of Letters Patent.

Patented June 19, 1906.

Application led December 5, 1904. Serial No. 235,462.

To a/ZZ whom, t may concern: l

Be it known that I, WILLIAM L. WATERS, a subject of the King of England,residing at Milwaukee, in the county of Milwaukee and State ofWisconsin, have invented a certain new and useful Improvement inCommutators, of which the following is a full, clear, concise, and exactdescription, reference being had to the accompanying drawings, forming apart of this speciiication.

My invention relates to commutatore, and particularly to commutatorewith which a plurality of brushes are employed; and the object of myinvention is improved construction of the commutator and its arrangementwith respect to the armature.

To accommodate a great numb er of brushes, the commutator must offerconsiderable surface; but if the commutator is integral it becomes veryunsatisfactory on account of the heating which results, it beingimpossible to provide satisfactory ventilation to keep the segmentscool. My invention, therefore, provides for a divided commutator or,infact, two commutatore which may be of exactly similar construction andone disposed at either side of the armature. The segments of one of thecommutatore only is connected in the usual manner with thearmature-coils, while corresponding segments of both commutatore areconnected together by leads which may pass through the interior of thearmature or through the axial Ventilatingepacings ordinarily employed.Each commutator is well provided with Ventilatingopeninge, and thecurrents generated by the armature upon rotation pass outwardly throughthe commutator-Ventilating channels and also cross the surface of thecommutator-bars, and thus the commutator ie ke t cool` I also provide avery simple and e cient arrangement of the commutatore with respect tothe armature, the armature and commutatore beingl all mounted on acommon sleeve which is keyed to the armatureshaft.

My invention will be best understood with reference to the accompanyingdrawings, in which- Eigure 1 is an end view of the armature andcommutatore, and Fig. 2 is a longitudinal sectional view taken on line 22 of Fig. 1.

Each commutator part consists of a eupporting-frame in the shape of apulley l, whose rim 2 and hub 3 are connected by spokes 4. Aclamping-ring 5 engages each side of the pulley, being provided with anannular groove 6 for engaging the edge of the pulley. The clamping-ringeare provided with openings 7, through which bolts 8 pase for clampingthe rings against the pulley and for clamping the commutator-segments 9about the periphery of the pulley. The armature 10 consists of endplatee 11, between which are clamped the armature-laminations 12 bymeans of clamping-bolts 13. A sleeve 14 is secured to the shaft 15 by akey 16 and ie provided with shoulders 17 and shoulders 18. The endplates of the armature are clamped to the s houlder 17, while the hubs 3of the commutatore are clamped against the shoulders 18, and thus thearmature and commutatore are rigidly connected together. The armatureend plates may consist of a hub and spokes, or, as shown, these endplatee may be provided with Ventilatingopenings 19, which lead into thechamber 2() between the end plates and laminations. The armature-coils21 may be arranged in any manner in the armature-teeth and theirterminals 22 connected with appropriate segments of one of thecommutatore. The corresponding segments of the commutatore are connectedby means of conductors 23, which pase through the Ventilating-openings19, and thus sufficient surface may be provided for the brushes 24,which may be of any number.

As the armature and commutatore are rotated sufiicient air-currents willbe generated and will be forced through the ventilating-openings of thearmature and through the channels 25 between the spokes and rings of thecommutatore and also over the surface of the commutator-segmente tokeepthe commutatore and armature well cooled.

I do not wish to be limited to the exact construction and arrangementherein shown and described, as changes may readily be made withoutdeparting from the spirit of invention; but

I claim as new and desire to secure by Letters Patent- 1. Thecombination with an armature, of a commutator arranged at each sidethereof and adapted to rotate therewith, the segments of one commutatorbeing suitably connected with the coils of the armature, the segments ofthe other commutator having no direct connection with the coils,Ventilatingpassages through the interior of the armature, and conductorspassing through said IOO IIO

ventilating-passages and connecting with the segments of the commutatorefor affording an electrical path between the corresponding segments ofthe commutatore.

2. The combination with an armature, of a commutator arranged at eacheide thereof, said commutatore being of similar construction, asupporting-rim for each commutator for supporting the segments thereof,clamping-rings engaging the edges of said rim and said segments, a hubfor each commutator, spokes connecting said rim with said hub to formpassage ways through each commutator, the segments of one commutatorbeing suitably connected with the coils of the armature, the segments ofthe other commutator having no direct connection with the coils,ventilating passage-ways through the core of the armature, andconductors passing through said passage-ways and connectingcorresponding segments of the commutatore.

3. The combination with an armature, of a commutator associated witheach end there of, a sleeve provided with two sets of shoulders, the endplates of said armature engaging said sleeve against one set ofshoulders, said commutatore being mounted on said sleeve, and eachengaging one of the other shoulders, the segments of one commutatorbeing suitably connected with the coils ofthe armature, and conductorsfor joining correponding segments of the commutatore.

4. The combination with an armature, of two commutatore, one disposed ateach side thereof, a sleeve, sets of shoulders on said sleeve, the endplates for said armature engaging said sleeve and oneeet of saidshoulders, commutatore being mounted on said sleeve, and each engagingone of the other shoulders, ventilating passage-ways extending throughsaid armature and through said commutatore, the segments of -saidcommutatore being suitably connected with each other and with thearmature-coils.

5. The combination with an armature, of a commutator disposed at eachend thereof, a sleeve provided with two sets of shoulders, the endplates of said armature engaging said sleeve and one set of shoulders,said commutatore being also mounted on said sleeve and each engaging oneof the other shoulders, ventilating passage-ways extending through saidarmature and through said commutatore, the segments of one commutatorbeing suitably connected with the coils of the armature, the segments ofthe other commutator having no direct connection with the coils, andconductors passing through the ventilating passage-ways of the armaturefor connecting corresponding segments ofthe commutatore,

6. The combination with an armature, of a commutator disposed at eachside thereof, a sleeve upon which said armature and said commutatore arerigidly mounted, a supporting-rim for the segments of each commutator,clamping-rings for securing the segments of each commutator to thecorresponding supporting-rim, a hub for each commutator, spokesextending from the rim to the hub to form ventilating passage-ways,ventilating passage-ways through the armature, conductors passingthrough said armature passageways for suitably connecting togethercorresp onding commutator-segments, the segments of one of saidcommutatore being suitably connected with the armature-coils.

7. The combination with an armature, of a commutator disposed at eachside thereof,

' a sleeve provided with two sets of shoulders,

the end plates of the armature engaging said sleeve and one set ofshoulders, hub portions of the commutatore mounted on said sleeve andengaging the other shoulders, asupporting-rim for each commutator,spokes for connecting each supporting-rim with the corresponding hub,clamping-rings for securing the commutator-segments to the rim, saidclamping-rings and spokes forming passage-ways through the commutatore,ventilating passage-ways through the armature, and conductors passingthrough said armature paesage-ways for connecting together correspondingsegments of the commutatore, the segments of one of said commutatorebeing suit ably connected with the armature-coils.

ln witness whereof I hereunto subscribe my name this 1st day ofDecember, A. D.

WILLIAM L. WATERS. Vitnesses:

JOHN E. HUBEL, W. S. MAY.

